3D printing wire rod with pearl effect and preparation method thereof

Abstract

The invention discloses a 3D printing wire rod with a pearl effect and a preparation method thereof. A 3D printing material with the pearl effect is prepared by using transparency and refractive index differences among different materials according to a pearl effect generating principle. According to the technical scheme, the 3D printing wire rod is prepared from the following raw materials in percentage by weight: 5 to 90 percent of PLA, 5 to 90 percent of high-refractive-index transparent resin, 0 to 10 percent of compatilizer, 0.05 to 2 parts of antioxidant and 0.05 to 1.5 percent of white oil. The preparation method comprises the following steps: (1) drying; (2) weighing the materials; (3) mixing; (4) extruding and granulating; (5) molding a wire rod; (6) cooling and performing traction; (7) coiling. The obtained 3D printing wire rod has a self-pearl effect and excellent toughness, a printed product has high gloss, light resistance and stability, and the problem of plugging in a printing process is solved.

Description

technical field [0001] The invention relates to a 3D printing wire material with pearlescent effect and a preparation method thereof. Background technique [0002] 3D printing, also known as additive manufacturing, is a new type of manufacturing method that began in the 1980s. After nearly 30 years of development, the technology is relatively mature and is widely used in aerospace, military, medical and other fields, and is also used in In the cultural and creative fields that are closely related to our lives. [0003] According to different printing principles, the mainstream printing technologies can be divided into Fused Deposition Modeling (FDM), Laminated Modeling (LOM), Stereolithography (SLA), Three-dimensional Printing (3DP) and Selective Laser Sintering (SLS). )Wait. Compared with other 3D printing technologies, FDM technology does not involve dangerous links such as high temperature, high pressure, and laser, and its volume is also small. It is a relatively low-c...

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Problems solved by technology

[0006] Chinese patent CN105524399A discloses a 3D printing polymer material with special functions such as metallic texture and pearlescent effect prepared by adding pearlescent toner. The addition of toner will limit its dispersion and distribution uniformity in the polymer matrix, thereby affecting the printing effect and deteriorating the toughness of the material to a certain extent

Chinese patent CN105038157A discloses a 3D printing composite consumable with shimmering golden luster prepared by adding golden pearlescent pigments. Although the product printed by the composite wire prepared by this patent has good gold-plated luster and texture, it is filled with golden pearlescent at a higher level. In the case of pigments, secondary processing and dispersion are involved, which can easily lead to deterioration of material properties, and plugging problems are more likely to occur during the printing process, which affects printing fluency

Chinese patent CN104592726A discloses a 3D printing composite consumable with flashing silver luster prepared by adding metal aluminum silver powder. It is easy to be damaged during the cutting process, which affects the color stability. This consumable is also prone to plugging problems during the printing process, and the material is relatively brittle

So far, this method has not been reported

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